Method and device in nodes used for wireless communication

a wireless communication and wireless communication technology, applied in wireless communication, transmission path sub-channel allocation, transmission path division, etc., can solve the problems of reducing system efficiency, extra delay and pingpong effect, and interference with the transmission path, so as to reduce the effect of reducing hardcore complexity and cos

Pending Publication Date: 2022-05-05
SHANGHAI LANGBO COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present disclosure provides a solution to the problem of high costs and complexity in wireless communication systems by providing a unified solution for various scenarios, such as massive MIMO, beam-based communications, and LTE multi-antenna system. This reduction of hardcore complexity and costs is achieved by optimizing the performance of the system and enhancing the efficiency of the feedback mechanism between the user equipment and the base station. Additionally, the patent text provides further optimization in the case of a small gap between scheduling signaling and Physical Downlink Shared Channel, which ensures better performance of the system.

Problems solved by technology

Inventors find through researches that beam-based communications will have negative influence on inter-cell handover, such as extra delay and pingpong effect.
In the meantime, since the update of CORESET configuration needs to go through resetting of a Radio Resource Control (RRC) signaling, which may lead to a consequence that, when a terminal moves back and forth between multiple beams of multiple cells, a large delay will be incurred in the Handover (HO) of a traditional Layer 3, thus reducing the system efficiency.
Based on the scenarios, a problem to be solved is how a terminal determines the grouping of HARQ-ACK codebook on the condition of a CORESET being associated with multiple cells, and the issue of interpreting of corresponding Downlink Assignment Index (DAI).

Method used

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  • Method and device in nodes used for wireless communication
  • Method and device in nodes used for wireless communication
  • Method and device in nodes used for wireless communication

Examples

Experimental program
Comparison scheme
Effect test

embodiment 1

[0113]Embodiment 1 illustrates a flowchart of processing of a first node, as shown in FIG. 1. In 100 illustrated by FIG. 1, each box represents a step. In Embodiment 1, a first node in the present disclosure receives K information blocks in step 101; receives a first signaling and a second signaling respectively in a first resource set and a second resource set in step 102; and transmits first UCI in a physical layer channel on a first cell in step 103.

[0114]In Embodiment 1, K is a positive integer greater than 1, each of the K information blocks comprises a first-type index and at least one second-type index, and each of the K information blocks is used for indicating a resource set; the first resource set is the resource set indicated by a first information block, the first information block being one of the K information blocks, and the second resource set is the resource set indicated by a second information block, the second information block being one of the K information bloc...

embodiment 2

[0298]Embodiment 2 illustrates a schematic diagram of a network architecture, as shown in FIG. 2.

[0299]FIG. 2 is a diagram illustrating a network architecture 200 of 5G NR, Long-Term Evolution (LTE) and Long-Term Evolution Advanced (LTE-A) systems. The 5G NR or LTE network architecture 200 may be called an Evolved Packet System (EPS) 200 or other suitable terminology. The EPS 200 may comprise one or more UEs 201, an NG-RAN 202, an Evolved Packet Core / 5G-Core Network (EPC / 5G-CN) 210, a Home Subscriber Server (HSS) 220 and an Internet Service 230. The EPS 200 may be interconnected with other access networks. For simple description, the entities / interfaces are not shown. As shown in FIG. 2, the EPS 200 provides packet switching services. Those skilled in the art will find it easy to understand that various concepts presented throughout the present disclosure can be extended to networks providing circuit switching services or other cellular networks. The NG-RAN 202 comprises an NR node ...

embodiment 3

[0309]Embodiment 3 illustrates a schematic diagram of a radio protocol architecture of a user plane and a control plane according to the present disclosure, as shown in FIG. 3. FIG. 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture of a user plane 350 and a control plane 300. In FIG. 3, the radio protocol architecture for a control plane 300 between a first communication node (UE, gNB or, RSU in V2X) and a second communication node (gNB, UE, or RSU in V2X), or between two UEs, is represented by three layers, which are a layer 1, a layer 2 and a layer 3, respectively. The layer 1 (L1) is the lowest layer which performs signal processing functions of various PHY layers. The L1 is called PHY 301 in the present disclosure. The layer 2 (L2) 305 is above the PHY 301, and is in charge of the link between the first communication node and the second communication node or between two UEs via the PHY 301. The L2 305 comprises a Medium Access Control (MAC) sub...

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Abstract

The present disclosure provides a method and device used in nodes for wireless communications. The node firstly receives K information blocks, K being a positive integer greater than 1, each of the K information blocks comprises a first-type index and at least one second-type index; and then receives a first signaling and a second signaling respectively in a first resource set and a second resource set; and transmits first UCI in a physical layer channel on a first cell, the first cell being capable of bearing a HARQ-ACK associated with the first signaling; the first UCI comprises a HARQ-ACK associated with a second signaling. The present disclosure improves the method and device for design of HARQ-ACK codebook grouping to optimize the system performance.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims the priority benefit of Chinese Patent Application No. 202011215761.0, filed on Nov. 4,2020, the full disclosure of which is incorporated herein by reference.BACKGROUNDTechnical Field[0002]The present disclosure relates to transmission methods and devices in wireless communication systems, and in particular to a designing scheme and device for uplink (UL) feedback in wireless communications.Related Art[0003]In 5G New Radio (NR), Massive Multi-Input Multi-Output (MIMO) is a key technology. In Massive MIMO, multiple antennas form through beamforming a narrow beam pointing in a specific direction to enhance communication quality. In 5G NR, a base station configures a control signaling and beam transmission properties of a data channel through Transmission Configuration Indication (TCI). For the control signaling, the base station can indicate a TCI State employed when blind detecting a corresponding Control Resource S...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04L1/18H04L5/00
CPCH04W72/0413H04L5/0053H04L1/1812H04W72/0446H04L5/0005H04B7/0413H04B7/0617H04B7/086H04W72/566H04W72/535H04W72/53H04L1/1854H04L5/0055H04L27/261H04W72/21
InventorJIANG, QIZHANG, XIAOBO
OwnerSHANGHAI LANGBO COMM TECH CO LTD